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The weather in Mariehamn in April is very cold with temperatures between 2°C and 4°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Mariehamn during the month of April. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
You can expect a few days of snow in Mariehamn during April. It’s important to get out your snow boots and warm mittens to stay warm while you explore Mariehamn.
Our weather forecast can give you a great sense of what weather to expect in Mariehamn in April 2025.
If you’re planning to visit Mariehamn in the near future, we highly recommend that you review the 14 day weather forecast for Mariehamn before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 1° / -1° | 4 | 13 | 15 | 49 mm | Awful | Mariehamn in January |
| February | 0° / -2° | 3 | 12 | 14 | 34 mm | Awful | Mariehamn in February |
| March | 1° / -1° | 5 | 16 | 11 | 33 mm | Awful | Mariehamn in March |
| April | 4° / 2° | 3 | 23 | 4 | 28 mm | Awful | Mariehamn in April |
| May | 8° / 6° | 4 | 26 | 1 | 44 mm | Ok | Mariehamn in May |
| June | 13° / 11° | 4 | 26 | 0 | 51 mm | Ok | Mariehamn in June |
| July | 17° / 15° | 4 | 27 | 0 | 63 mm | Good | Mariehamn in July |
| August | 18° / 16° | 5 | 26 | 0 | 86 mm | Good | Mariehamn in August |
| September | 14° / 13° | 4 | 26 | 0 | 69 mm | Good | Mariehamn in September |
| October | 9° / 8° | 7 | 24 | 0 | 70 mm | Bad | Mariehamn in October |
| November | 6° / 5° | 7 | 20 | 3 | 60 mm | Awful | Mariehamn in November |
| December | 3° / 1° | 6 | 14 | 10 | 60 mm | Awful | Mariehamn in December |